Sony DT series lenses are optimized for APS-C format cameras. The DT 50mm F1.8 SAM lens stands in the same line with a focal length of 75mm ( 35mm equivalent ). The medium telephoto lens is good for taking scenic portraits and close-up pictures. It has a large F1.8 aperture which enables fast shooting even in low light conditions. And a 7 blade circular diaphragm helps to produce smooth bokeh that creates a sense of beauty.